JP3241345U - gas dissolver - Google Patents

Abstract

A gas dissolving device is provided that more efficiently increases the amount of gas dissolved in a liquid even if the output of the pump is small. A gas-dissolving apparatus 1 includes a processing space 4 comprising a cylindrical body 2 and plates closing both openings of the cylindrical body 2, respectively, and a gas-liquid processing space provided in the cylindrical body 2 in which gas and liquid are mixed. It has an inlet 5 through which the mixed fluid flows into the processing space 4 and an outlet 6 provided in the cylindrical body 2 through which the gas-liquid mixed fluid is discharged from the processing space 4. Part of the gas-liquid mixed fluid flows into the processing space 4. It spirally turns from the outflow port 5 to the discharge port 6 inside. Shearing units 131-1 to 131-5 are provided in the processing space 4 for imparting a shearing force to the spirally swirling gas-liquid mixed fluid. [Selection drawing] Fig. 5

Description

The present invention relates to a gas dissolving device for efficiently dissolving gas in a liquid, and in particular, a gas that can efficiently increase the amount of dissolved gas in the liquid and moderate the decrease in the amount of dissolved gas in the liquid over time. It relates to a dissolution device.

Conventionally, liquids with an increased amount of dissolved gas have been used, for example, in the fields of food, agriculture, and the environment, and their fields of application tend to expand. As for liquids with an increased amount of dissolved gas, there is known an apparatus that generates fine bubbles such as microbubbles and nanobubbles to increase the amount of dissolved gas in the liquid. JP-A-2013-081880 discloses a gas dissolving device that generates fine bubbles such as microbubbles and nanobubbles and dissolves them (expectedly) in a liquid.

In this gas dissolving apparatus, the gas dissolving apparatus 1 includes a processing space composed of a cylindrical body and plates closing both openings of the cylindrical body, and a gas-liquid mixed fluid in which gas and liquid are mixed and provided in the cylindrical body. has an inlet for flowing into the processing space and an outlet provided in the cylinder for discharging the gas-liquid mixed fluid from the processing space, and a part of the gas-liquid mixed fluid flows from the outlet to the outlet in the processing space. It spirals all the way through.

JP 2013-081880 A

By the way, there is a demand to further increase the amount of gas dissolved in the liquid of the above-described conventional gas dissolving apparatus.

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a gas dissolving apparatus that can efficiently increase the amount of dissolved gas in a liquid even if the output of the pump is small.

In order to solve the above-mentioned problems, the gas dissolving apparatus of the present invention comprises a processing space comprising a cylindrical body and plates closing both openings of the cylindrical body, and a processing space provided in the cylindrical body in which gas and liquid are mixed. a gas-liquid mixed fluid flowing into the processing space; and a discharge port provided in the cylindrical body for discharging the gas-liquid mixed fluid from the processing space, wherein the gas-liquid A portion of the mixed fluid is spirally swirled in the processing space from the outlet to the outlet, and a shearing portion that applies a shearing force to the spirally swirling gas-liquid mixed fluid is disposed in the processing space. placed in the space.

Preferably, the gas dissolving device comprises a processing space comprising a cylindrical body and plates closing both openings of the cylindrical body, and a liquid inlet provided in the cylindrical body through which liquid flows into the processing space. , a gas inlet provided in the cylinder or the plate for allowing gas to flow into the processing space; and a gas outlet provided in the cylinder for discharging the liquid and the gas from the processing space. In the dissolving apparatus, a portion of the fluid composed of the liquid and the gas is spirally swirled within the processing space from the liquid outlet to the outlet.

According to the gas dissolving apparatus of the present invention, part of the gas-liquid mixed fluid spirally swirls in the processing space from the outlet to the outlet, and centrifugal force due to spiral swirling is applied to the gas-liquid mixed fluid. In addition, the gas-liquid mixed fluid is pressurized. In the pressurized gas-liquid mixed fluid, the gas can be efficiently dissolved in the liquid.
In addition, the gas-liquid mixed fluid is sheared by the shearing portion in the course of flowing spirally from the inlet to the outlet, and the gas can be dissolved in the liquid more efficiently.

In addition, part of the gas-liquid mixed fluid is spirally swirled in the processing space from the outlet to the outlet, so that the gas-liquid mixed fluid smoothly passes through the processing space. The gas can be efficiently dissolved in the liquid by using a pump with a small output even if the pressure applied to the gas-liquid mixed fluid is small.

Preferably, the spiral swirling of the part of the gas-liquid mixed fluid is laminar flow.

A device that generates microbubbles and nanobubbles needs to swirl the gas-liquid mixed fluid at high speed. However, the gas dissolving device of claim 2 operates in the same manner as the gas dissolving device of claim 1, and in addition, the gas-liquid mixed fluid is partly spirally swirled to form a laminar flow, and microbubbles, nanobubbles, etc. It is not a device that actively generates bubbles, but rather a device that suppresses the generation of bubbles such as microbubbles and nanobubbles. Therefore, compared with devices that generate microbubbles and nanobubbles, the present invention can increase the amount of dissolved gas in the liquid even if the swirling speed of the gas-liquid mixed fluid is low. As a result, the output of the pump for causing the gas-liquid mixed fluid to flow into the processing space can be reduced, so energy saving can be achieved.

Preferably, a plurality of shearing sections are provided at different positions within the processing space in both the gravitational direction of the processing space and a first horizontal direction orthogonal to the gravitational direction.

Preferably, a plurality of shearing portions are provided at different positions in a second direction perpendicular to both the direction of gravity and the first horizontal direction.

Preferably, the plurality of shearing portions are linear members.

Preferably, the plurality of shearing portions are tapered members that taper toward the vicinity of the center of the processing space.

Preferably, the shearing portion is located in the processing space between the liquid inlet and the gas inlet and the outlet.

Preferably, the spiral swirling of the portion of the gas-liquid mixed fluid is laminar flow.

In addition, since the air pressure in the cavity is about the atmospheric pressure, it is possible to prevent the discharge water discharged from the discharge port from generating air bubbles in the liquid due to a sudden drop in pressure.

According to the present invention, it is possible to provide a gas dissolving apparatus that efficiently increases the amount of dissolved gas in a liquid even if the output of the pump is small.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the structure of the front side of the gas dissolving apparatus of 1st Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure for demonstrating the structure of the side surface side of the gas dissolving apparatus of 1st Embodiment of this invention. FIG. 4 is a view for explaining the front configuration of a shearing section provided in the processing space of the gas dissolving apparatus according to the first embodiment of the present invention; FIG. 4 is a diagram for explaining the lateral configuration of a shearing section provided in the processing space shown in FIG. 3 ; FIG. 10 is a view for explaining the front configuration of a shearing section provided in the processing space of the gas dissolving apparatus according to the second embodiment of the present invention; FIG. 6 is a diagram for explaining the lateral configuration of a shearing section provided in the processing space shown in FIG. 5 ;

An embodiment of the present invention will be described below with reference to the drawings.
<First embodiment>
The dashed-dotted arrows in FIGS. 1 and 2 show an example of the flow of the gas-liquid mixed fluid.
As shown in FIGS. 1 and 2, the gas dissolving apparatus 1 of this embodiment includes a processing space 4 comprising a cylinder 2 and plates 3 closing both openings of the cylinder 2, and a processing space 4 provided in the cylinder 2. It has an inlet 5 through which a gas-liquid mixed fluid, which is a mixture of gas and liquid, flows into the processing space 4, and an outlet 6 provided in the cylindrical body 2 through which the gas-liquid mixed fluid is discharged from the processing space.

The cylindrical body 2 has a cylindrical shape with a circular cross section. The plate 3 is also a disk having a size sufficient to close both openings of the cylindrical body 2 .

As shown in the side view of FIG. 1, the inlet 5 and the outlet 6 are provided at positions offset in the axial direction of the cylindrical body 2 . The gas-liquid mixed fluid that has flowed into the processing space from the inflow port 5 is swirled along the cylinder 2 toward the discharge port 6 . Therefore, as indicated by the dashed-dotted line arrow in FIG. 1, part of the gas-liquid mixed fluid spirally swirls within the processing space 4 from the outlet 5 to the outlet 6 .

FIG. 3 is a diagram for explaining the front configuration of the shearing section 31 provided in the processing space 4 of the gas dissolving apparatus 1 according to the first embodiment of the present invention. FIG. 4 is a diagram for explaining the lateral configuration of the shearing section 31 provided in the processing space 4 shown in FIG.

As shown in FIG. 3, in the processing space 4, four shearing portions 31-1 to 31-4 are provided extending in the direction of gravity (vertical direction in FIG. 3) when viewed from the front.
The shearing portions 31-1 to 31-4 are linear members.
As shown in FIG. 3, the shearing portions 31-1 to 31-4 are provided at different positions at equal intervals in a first horizontal direction (horizontal direction in FIG. 3) orthogonal to the direction of gravity.

As shown in FIG. 4, the four shearing portions 31-1 to 31-4 are arranged in a second horizontal direction (left and right in FIG. direction).

The shearing portions 31-1 to 31-4 are provided between the outflow port 5 and the discharge port 6 in the processing space 4. As shown in FIG. Thus, by providing the shearing portions 31-1 to 31-4 between the inlet 5 and the outlet 6, the gas-liquid mixed fluid is efficiently sheared by the shearing portions 31-1 to 31-4, The dissolved gas amount in the liquid can be increased more efficiently.

According to the gas dissolving device 1, since the gas-liquid mixed fluid is pressurized by applying centrifugal force due to the spiral rotation to the gas-liquid mixed fluid, the gas is efficiently dissolved in the liquid in the pressurized gas-liquid mixed fluid. be able to.

In addition, according to the gas dissolving device 1, the gas-liquid mixed fluid is sheared by the shearing parts 31-1 to 31-4 in the process of spirally turning from the inlet 5 to the outlet 6, and the gas is further efficiently converted into a liquid. It can dissolve well.

Part of the spiral swirl of the gas-liquid mixed fluid is a laminar flow. As a result, the generation of bubbles such as microbubbles and nanobubbles is suppressed, and the gas-liquid mixed fluid spirals smoothly in the processing space 4 .

A centrifugal force acts on the gas-liquid mixed fluid as a part of the gas-liquid mixed fluid spirally swirls, and a cavity 7 is formed at the center of the spiral swirling of the liquid mixed fluid. Since the air pressure in the cavity 7 at the center of the revolution is approximately atmospheric pressure, the gas that has not dissolved in the gas-liquid mixed fluid is forcibly gathered in the cavity. In other words, air bubbles and the like are prevented from being mixed with the gas-liquid mixed fluid discharged from the processing space. Compared to the gas-liquid mixed fluid containing air bubbles, etc., the gas-liquid mixed fluid containing no air bubbles, etc., has a dissolved gas amount that decreases more slowly with the lapse of time.

In addition, since the air pressure in the cavity is low, the discharge water discharged from the discharge port can be prevented from generating air bubbles in the liquid due to a sudden drop in pressure.

<Second embodiment>
The gas-dissolving device 101 of this embodiment differs from the gas-dissolving device 1 of the first embodiment in the shape and position of the shearing portion, but the rest of the configuration is the same.

FIG. 5 is a diagram for explaining the front configuration of the shearing section 131 provided in the processing space 4 of the gas dissolving device 101 according to the second embodiment of the present invention. FIG. 6 is a diagram for explaining the lateral configuration of the shearing section 131 provided in the processing space 4 shown in FIG.

As shown in FIG. 5, in the processing space 4, five shearing portions 131-1 to 131-5 are provided at equal intervals in the circumferential direction of the processing space 4 when viewed from the front direction.
The shearing portions 31-1 to 31-4 are linear members.

As shown in FIG. 6, the five shearing portions 131-1 to 131-5 are arranged in a second horizontal direction (left and right in FIG. direction).

The shearing portions 131-1 to 131-5 are tapered members that taper toward the vicinity of the center of the processing space 4. As shown in FIG.

The shearing portions 131-1 to 131-5 are provided in the processing space 4 between the outflow port 5 and the discharge port 6 at positions along the helical revolution of the gas-liquid mixed fluid.

In the gas dissolving device 101, as in the first embodiment, the gas-liquid mixed fluid is sheared by the shearing portions 31-1 to 31-4 in the process of spirally flowing from the inlet 5 to the outlet 6, and the gas is can be dissolved in liquids more efficiently.

The invention is not limited to the embodiments described above.
That is, those skilled in the art may make various changes, combinations, subcombinations, and substitutions regarding the constituent elements of the above-described embodiments within the technical scope of the present invention or equivalents thereof.

The shape, number, and location of the shearing portions of the present invention are not limited to those shown in FIGS.

In the above embodiment, the case where the cylindrical body 2 has a circular cross section has been described. It may be a polygonal cylinder.

In the above embodiment, the plate 3 is also a circular plate having a size sufficient to close both openings of the cylindrical body 2. However, the cylindrical body is not limited to this. Any shape of the plate may be used as long as it can block both openings of 2 .

Furthermore, in the above embodiment, the spiral swirling of a part of the gas-liquid mixed fluid has been described as a laminar flow. Flow may occur.

Furthermore, in the above embodiment, the case where the gas dissolving device has the inlet 5 through which the gas-liquid mixed fluid in which gas and liquid are mixed flows into the processing space 4 has been described. and the gas dissolving device is provided in a processing space comprising a cylindrical body and a plate closing both openings of the cylindrical body so that the liquid flows into the processing space independently, and the liquid flows into the processing space. a liquid inlet that flows into a processing space; a gas inlet that is provided in the cylinder or the plate and allows gas to flow into the processing space; and a part of the gas-liquid mixed fluid composed of the liquid and the gas is spirally swirled in the processing space from the liquid outlet to the outlet. good too.

Reference Signs List 1 Gas dissolving device 2 Cylindrical body 3 Plate body 4 Processing space 5 Inlet 6 Outlet 7 Cavity 31-1 to 31-4 Shearing portion 131-1 to 131-5 Shearing portion

Claims (7)

a processing space comprising a cylinder and plates closing both openings of the cylinder;
an inflow port provided in the cylindrical body through which a gas-liquid mixed fluid in which gas and liquid are mixed flows into the processing space;
A gas dissolving device having a discharge port provided in the cylindrical body for discharging the gas-liquid mixed fluid from the processing space,
part of the gas-liquid mixed fluid spirally turns from the inlet to the outlet in the processing space,
A gas dissolving device, wherein a shearing section that imparts a shearing force to the spirally swirling gas-liquid mixed fluid is provided in the processing space. a processing space comprising a cylinder and plates closing both openings of the cylinder;
a liquid inlet provided in the cylindrical body through which liquid flows into the processing space;
a gas inlet provided in the cylinder or the plate through which gas flows into the processing space;
a discharge port provided in the cylindrical body for discharging the liquid and the gas from the processing space;
2. The gas dissolving device according to claim 1, wherein part of said gas-liquid mixed fluid spirally turns within said processing space from said liquid inlet to said outlet. The gas dissolving device according to claim 1, wherein the shearing portion has a shape protruding into the processing space from a housing forming the processing space. 2. The shearing unit according to claim 1, wherein a plurality of shearing units are provided at different positions within the processing space in both the gravitational direction of the processing space and a first horizontal direction orthogonal to the gravitational direction. gas dissolver. 5. The gas dissolving device according to claim 4, wherein a plurality of said shearing portions are provided at different positions in a second direction perpendicular to both said gravity direction and said first horizontal direction. The gas dissolving device according to claim 5, wherein the plurality of shearing portions are tapered members that taper toward the vicinity of the center of the processing space, and are provided at positions along the spiral revolution of the gas-liquid mixed fluid. 3. The gas dissolving device according to claim 2, wherein the shearing portion is positioned between the liquid inlet and the gas inlet and the outlet in the processing space.

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